Bogi Hansen, Hjálmar Hátún, Regin Kristiansen, Steffen M. Olsen and Svein Østerhus Iceland Scot- land Nordic Seas Faroes 0.8 Sv 3.8 Sv 3.8 Sv Greenland Østerhus et al., GRL 2005 Thermohaline forcing maintains the Iceland-Faroe inflow of heat and salt to the Arctic IF-inflow 40 - 45%
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Bogi Hansen, Hjálmar Hátún, Regin Kristiansen, Steffen M. Olsen and Svein Østerhus Iceland Scot-…
The Feedback Mechanism Greenland Scotland Ridge World Ocean Nordic Seas + Arctic Ocean Cooling Salt Overflow Entrainment NADW
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Bogi Hansen, Hjálmar Hátún, Regin Kristiansen, Steffen M. Olsen and Svein Østerhus
Iceland
Scot- land
NordicSeas
Faroes
0.8 Sv 3.8 Sv3.8 Sv
Greenland
Østerhus et al., GRL 2005
Thermohaline forcingmaintains the Iceland-Faroe inflow of
heat and salt to the Arctic
IF-inflow40 - 45%
Didn’t we know that already ?
The Feedback Mechanism
GreenlandScotland
Ridge
World Ocean Nordic Seas + Arctic Ocean
CoolingSalt
Overflow
Entrainment
NADW
The Feedback Mechanism implies:
GreenlandScotland
Ridge
World Ocean Nordic Seas + Arctic Ocean
Atlantic inflow
Removal of water from the Nordic Seas maintains the Atlantic inflow through sea-level forcing
Estuarine
Thermoh.But !!
Maybe
• Sea-level forcing maintains the average Atlantic inflow